Android 7.1.1 Nougat update for Huawei P8, P8 Lite and Mate S

Huawei Mobile has released the Android 7 Nougat update for the P9, P9 Lite and Mate 8 devices. Why they haven't done the same for the P8, P8 Lite and Mate S, this only leads to one conclusion:

Huawei only cares about the factory line revenue generation of their P9, P9 Lite and newer devices! All you customers who purchased new P8, P8 Lite and Mate S a few months back, you can be sure that Huawei only wants you to buy a newer mobile phones and leave older devices even if they are still sufficient by hardware side.

The hardware requirements for Android Nougat are irrefutably the same as Android Marshmallow. Where is 18 month software support?